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EP0506131A3 - Method of producing glass blank - Google Patents

Method of producing glass blank Download PDF

Info

Publication number
EP0506131A3
EP0506131A3 EP19920105413 EP92105413A EP0506131A3 EP 0506131 A3 EP0506131 A3 EP 0506131A3 EP 19920105413 EP19920105413 EP 19920105413 EP 92105413 A EP92105413 A EP 92105413A EP 0506131 A3 EP0506131 A3 EP 0506131A3
Authority
EP
European Patent Office
Prior art keywords
glass blank
producing glass
producing
blank
glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19920105413
Other versions
EP0506131B1 (en
EP0506131A2 (en
Inventor
Yoshiyuki Shimizu
Shoji Nakamura
Tadayoshi Yonemoto
Masaaki Sunohara
Tadao Shioyama
Noriyuki Kawata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Sumita Optical Glass Inc
Original Assignee
Matsushita Electric Industrial Co Ltd
Sumita Optical Glass Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd, Sumita Optical Glass Inc filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0506131A2 publication Critical patent/EP0506131A2/en
Publication of EP0506131A3 publication Critical patent/EP0506131A3/en
Application granted granted Critical
Publication of EP0506131B1 publication Critical patent/EP0506131B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/10—Cutting-off or severing the glass flow with the aid of knives or scissors or non-contacting cutting means, e.g. a gas jet; Construction of the blades used
    • C03B7/12—Cutting-off or severing a free-hanging glass stream, e.g. by the combination of gravity and surface tension forces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/86—Linear series of multiple press moulds
    • C03B2215/87—Linear series of multiple press moulds with change of transportation direction in the horizontal plane, e.g. rectangular or "U" shape serial transport
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Glass Compositions (AREA)
  • Surface Treatment Of Glass (AREA)
EP92105413A 1991-03-28 1992-03-28 Method of producing glass blank Expired - Lifetime EP0506131B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP64451/91 1991-03-28
JP3064451A JP2790547B2 (en) 1991-03-28 1991-03-28 Glass material manufacturing method

Publications (3)

Publication Number Publication Date
EP0506131A2 EP0506131A2 (en) 1992-09-30
EP0506131A3 true EP0506131A3 (en) 1993-05-26
EP0506131B1 EP0506131B1 (en) 1999-01-20

Family

ID=13258628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105413A Expired - Lifetime EP0506131B1 (en) 1991-03-28 1992-03-28 Method of producing glass blank

Country Status (4)

Country Link
EP (1) EP0506131B1 (en)
JP (1) JP2790547B2 (en)
KR (1) KR950007698B1 (en)
DE (1) DE69228202T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5766293A (en) * 1996-10-03 1998-06-16 Eastman Kodak Company Method and apparatus for making optical preforms with controlled peripheral edge wall geometry
DE19722921A1 (en) * 1997-05-31 1998-12-03 Schott Zwiesel Glaswerke Process for the production of hollow glass moldings and associated device for carrying out the process
JP2006265087A (en) 2004-12-13 2006-10-05 Ohara Inc Preform for optical element
KR101281040B1 (en) * 2012-12-14 2013-07-17 (주)제이엠씨 글라스 Apparatus for forming glass

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359433A (en) * 1941-09-20 1944-10-03 Anchor Hocking Glass Corp Transferring machinery
US3930819A (en) * 1975-02-06 1976-01-06 Fabrication De Maquinas, S.A. Press molded hot glassware handling apparatus
DE3924238A1 (en) * 1988-07-22 1990-01-25 Hoya Corp Glass element mfr. - prevents traces of knife cut by faster lowering of capturing mould
EP0378292A1 (en) * 1989-01-13 1990-07-18 Matsushita Electric Industrial Co., Ltd. Method of manufacturing glass optical element
EP0408065A2 (en) * 1989-07-14 1991-01-16 Matsushita Electric Industrial Co., Ltd. Method of producing optical glass element and production apparatus using this method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359433A (en) * 1941-09-20 1944-10-03 Anchor Hocking Glass Corp Transferring machinery
US3930819A (en) * 1975-02-06 1976-01-06 Fabrication De Maquinas, S.A. Press molded hot glassware handling apparatus
DE3924238A1 (en) * 1988-07-22 1990-01-25 Hoya Corp Glass element mfr. - prevents traces of knife cut by faster lowering of capturing mould
EP0378292A1 (en) * 1989-01-13 1990-07-18 Matsushita Electric Industrial Co., Ltd. Method of manufacturing glass optical element
EP0408065A2 (en) * 1989-07-14 1991-01-16 Matsushita Electric Industrial Co., Ltd. Method of producing optical glass element and production apparatus using this method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 143 (C-703)19 March 1990 & JP-A-2 014 839 ( HOYA CORP ) 18 January 1990 *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 345 (C-864)3 September 1991 & JP-A-3 137 030 ( MINOLTA CAMERA CO LTD ) 11 June 1991 *

Also Published As

Publication number Publication date
KR920017960A (en) 1992-10-21
EP0506131B1 (en) 1999-01-20
DE69228202D1 (en) 1999-03-04
KR950007698B1 (en) 1995-07-14
JPH0640730A (en) 1994-02-15
JP2790547B2 (en) 1998-08-27
EP0506131A2 (en) 1992-09-30
DE69228202T2 (en) 1999-08-19

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